<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../vue.js"></script>
  </head>

  <body>
    <div id="app">
      <h1>{{msg}}</h1>
      <input type="text" v-model="search" />
      <ul>
        <li v-for="item of newPerson" :key="item.id">
          {{item.name}}--{{item.age}}
        </li>
      </ul>
    </div>
    <script>
      Vue.config.productionTip = false;
      const vm = new Vue({
        el: "#app",
        data() {
          return {
            msg: "hello vue!",
            search: "",
            person: [
              {
                id: "001",
                name: "laowang",
                age: 18,
              },
              {
                id: "002",
                name: "xiaowang",
                age: 12,
              },
              {
                id: "003",
                name: "dawang",
                age: 33,
              },
              {
                id: "004",
                name: "xiaohuang",
                age: 6,
              },
            ],
          };
        },
        methods: {},
        //计算属性
        computed: {
          newPerson() {
            //  数组方法 filter过滤  并返回一个新的数组
            return this.person.filter((item) => {
              // 调用字符串方法includes查值 如果相匹配返回true 不匹配则返回fasle
              // 为ture就满足条件返回该项
              return item.name.includes(this.search);
            });
          },
        },
      });
    </script>
  </body>
</html>
